Machine fob bending metal plates



-J. PERRY.

Hanging Machine.

Patented Aug. 18,1857.

u PETERS mmnhn u nlr. Whhmgmn, at:

UNITED STATES PATENT OFFICE.

JULIUS PERRY, OF PLYMOUTH HOLLOW, CONNECTICUT.

MACHINE FOR BENDING- METAL PLATES.

Specification of Letters Patent No. 18,019, dated August 18, 1857.

To all whom it may concern:

Be it known that I, JULIUS PERRY, of Plymouth Hollow, in the county ofLitchfield and State of Connecticut, have invented a new and ImprovedMachine for Rolling in Sharp Angular Form the Edges of Bent MetalPlates; and I do hereby declare that the following is a full, clear, andexact description of the same, reference being had to the annexeddrawings, making a part of this specification, in which Figure l, is a.front view of my improvement. Fig. 2, is a section of ditto, taken inthe line (00) Fig. 1. Fig. 3, is a back View of ditto. Fig. l, is adetached plan or top view of the rollers and bed.

Similar letters of reference indicate corresponding parts in the severalfigures. I

The object of this invention is to' roll into sharp angular form at oneoperation the edges of bent metal plates, so that the plates will notrequire to be manually operated upon, or at least, not materially afterbeing drawn through the machine.

The invention is designed to form bentmetal plates properly, so thatcastings which are now used may be dispensed with, and the bent metalplates, which, by my improvement may be constructed at a small cost,used in their stead.

To enable those skilled in the art to fully understand and construct myinvention I will proceed to describe it.

A represents a rectangular box within which a rectangular bed B isplaced. Said bed having an adjustable guide or rest C atits front end,as shown in Figs. 1 and 2.

The upper surface of the bed B has a re cess made in it to receive-oneedge of the bent plate which is shown in red. The front end of the box Ais open, but the back end is closed by a die or draw plate (a) theopening (1)) of which is of right angular form corresponding of courseto that of the bent plate. The plate (a) should be of steel and formedof two parts and one of them made adjustable as usual by means of a setscrew J or its equivalent.

In the top plate of the box A a block D is placed, said block having thelower end of a screw E fitted on it, said screw passing through a nut(c) on the top of the box A. In the lower edge of the block D a roller Fis placed, said roller having an oblique or diagonal position relativelywith the upper surface of the bed B, as shown clearly in Figs. 2 and 4.

A block G is placed in one side of the box A. This block has the innerend of a screw H fitted in it, said screw passing through a nut ((Z) onthe side of the box. In the inner end of the block G, a'roller I isplaced. This roller has an oblique or diagonal position relatively withthe side of the bed B, as shown in Figs. 2 and 4.

The plate, shown in red, is bent or swaged in angular form, as shown inFig. 1, by a die, or any proper device. The plate thus bent has ofcourse a rounded corner, that is, the angle formed by the bend is notsharp.

The plate thus bent is placed on or adjusted to the bed B, and drawnthrough the slot (7)) and between the rollers I, F, and bed B. As theplate is drawn along the two rollers, owing to their angular position,force or press the metal toward the edge or angle formed by the bend,and in consequence of this tendency of the rollers the angle will bebrought to a sharp edge or completely filled out, the draw platescraping or cutting off the bur and completing the work.

By this improvement metal plates may be expeditiously and perfectlybent, and can be made cheaper than castings which are more generallyemployed. for fine lock cases and similar work, and brass is generallyused. German silver may be employed as well as other compositions ofmetal. Castings require a great deal of labor, considerable filing,polishing, &c., and are necessarily much heavier than wrought metal. Bymy improvement rolled brass or other metal after being bent may berolled at once into proper'angular form and being quite smooth butlittle or no after work is required.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The two rollers I, F, and bed B, placed in positions relatively witheach other, as shown and described for the'purpose specified.

2. I further claim the rollers I, F, and bed B in combination with thedie or draw plate (a) arranged as and for the purpose set forth.

JULIUS PERRY.

Witnesses SETH THOMAS, Jr., FRED W. PIERCE.

The plates are used

